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Finding the Fourth Proportional to 368,965.46, 509,210.61 and 225,820.82

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Solution

The fourth proportional to 368,965.46, 509,210.61 and 225,820.82 is: 311,656.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,965.46 : 509,210.61 = 225,820.82 : x
  2. Step 2: Convert to fraction form
    368,965.46/509,210.61 = 225,820.82/x
  3. Step 3: Cross multiply
    368,965.46x = 509,210.61 × 225,820.82
  4. Step 4: Simplify right side
    368,965.46x = 114,990,357,502.90
  5. Step 5: Solve for x
    x = 114,990,357,502.90/368,965.46
  6. Step 6: Final answer
    x = 311,656.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.